search

openwrt / mt76

mac80211 driver for MediaTek MT76x0e, MT76x2e, MT7603, MT7615, MT7628 and MT7688
752 stars 343 forks source link

mt7915: invalid airtime channel utilization for dap-x1860 #916

Open maurerle opened 2 months ago

maurerle commented 2 months ago

For the target ramips-mt7621, the device dlink-dap-x1860 does not show airtime channel utilization in current main.

After bisecting this to a specific commit, I found that the cause of this is in this commit:

b4a917417c856307fe19fb6a1a2819e3270df22e

Further information on this issue is provided in the gluon-issue-tracker at: https://github.com/freifunk-gluon/gluon/issues/3338

Solution

Currently, there is no other solution than to use the mt76 commit prior to the mentioned one.

If there is anything I can do to help fix this, I will - though I did not quite understand what goes wrong on this specific device and did not understand the code well enough.

The WSM20 and COVR-X1860 are not affected though and this issue does not influence general wireless clients quality

maurerle commented 2 months ago

Sometimes after 3h or after 36 hours, this bug fixes itself, magically:

image

Eventually the device calibrates itself..? All the 50 DAP-X1860 devices had this problem and did stop having it after a few days.